Boric Acid Powder 99% Acs Grade

Product Overview

Boric Acid Powder 99% ACS Grade (CAS 10043-35-3) is a high-purity, white crystalline compound known chemically as Hydrogen Borate or Orthoboric Acid. With a minimum assay of 99.0%, this ACS Reagent Grade material meets stringent specifications for impurity limits, making it suitable for analytical laboratories, precision manufacturing, and industrial formulations. It functions as a weak, monobasic Lewis acid, providing reliable pH buffering and acting as a primary boron source.

This product exhibits high solubility in boiling water and moderate solubility in cold water. It is manufactured under strict quality control to minimize trace metals (Iron, Lead) and anions (Chloride, Sulfate), ensuring consistent performance in sensitive applications such as borosilicate glass production, electroplating baths, and chemical synthesis.

Key Properties

• Product: Boric Acid Powder 99% ACS Grade
• CAS Number: 10043-35-3
• Formula: H3BO3
• Grade: ACS Reagent (≥99.0% Purity)
• Appearance: White crystalline powder
• Molecular Weight: 61.83 g/mol
• Assay: Min 99.0% (Typical 99.5%)
• Solubility: Soluble in water and alcohol
• Chloride (Cl): Max 0.001%
• Sulfate (SO4): Max 0.01%
• Heavy Metals (as Pb): Max 0.001%
• Iron (Fe): Max 0.001%

Common Industrial Applications

• pH Control & Buffering: Used to maintain stable acidity levels in chemical baths and industrial processing fluids.
• Glass & Ceramics: A critical flux and precursor in the manufacturing of borosilicate glass, enamels, and glazes to improve thermal resistance and durability.
• Electroplating: Acts as a buffer in nickel plating solutions to prevent high pH levels that cause coating defects.
• Laboratory Reagent: Utilized in analytical chemistry for the preparation of buffer solutions and as a primary standard.
• Chemical Synthesis: Precursor for other boron compounds, including borates and boron esters.

Safety & Handling

Warning: Handle with care. Boric Acid may cause eye and respiratory irritation. Wear appropriate Personal Protective Equipment (PPE), including safety goggles, gloves, and dust masks to prevent inhalation of powder. Ensure adequate ventilation during handling. Wash thoroughly after use.

Store in a cool, dry, well-ventilated area away from strong reducing agents and alkali metals. Keep container tightly closed when not in use to prevent moisture absorption and contamination.

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